Diaphragm buffing mechanism.



E. E. WHITMORE. DIAPHRAGM BUFFING MECHANISM.

APPLICATION FILED JUNE 22. 1916.

1,231,680, PatentedJu1y3, 1917.

' UNITED STATES PATENT OFFICE EDWAItD E. WHITMOBE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE CURTAIN SUPPLY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DIAPHRAGM BUFFING MEOHANISM.

Specification of Letters Patent.

Patented July 3, 1917.

Application filed June 22, 1916. Serial No. 105,111. I

To all whom it may concern:

' Be it known that I, EDWARD E. WHITMORE, a citizen of the United States, residing at Chicago, in the county of Cook and State of v Illinois, have invented certain new and useful Improvements in Diaphragm Buffing Mechanism, of which the following is a specification.

In car vestibule diaphragm construction it is of great importance to embody therein bufling mechanism which will combine in a high degree flexibility, resiliency, efiiciency in taking care of the shocks and distortions incident to use of cars in yards and on curves as well as straight stretches of track,

and, with all, such simplicity of construcunderstood a preferred embodiment of the same is set forth in the accompanyin drawing and'in the descri tion based ereon. Obviously, however, t e invention is susceptible of embodiment in other and varied constructional forms without departure from the essence thereof, wherefore the drawing and description are to be taken in an illustrative rather thanin an unnecessarily limiting sense. In the drawing--- 1 is a front elevation showing the face plate of the diaphragm and upperbufiing mechanism;

Fig. 2 is a vertical section on the line 2-2 ofFig. 1; and u Fig. 3 is a top plan view.

As herein illustrated, the underframing of the car is indicated at 11, the upper frammg at 12, the car end at 13, and the end post at 14. Suitably attached to the end plate be tween the end post is a stationary member 15 arranged to be telescoped withthe movable, member 16 of a metallic diaphragmthe other of said member, and links intersuch as shown in patent to Brown, No.

' 1,167,978 which has'been chosen for purposes of illustration although, obviously, the construction of the invention is susce tible of proved form, whether accordion plaited fab- I ric= or of metal. The face plate is indicated at 17 secured to and forming the face of the diaphragm member 16 and provided below with the usualbufiing stem 18 provided with compression sprin 19, the same being suitably mounted wit in the underframing of the car.

Above, the bufiing and other strains of operation are taken care of by means of a bow leaf spring 20 medially secured to the face plate at 21, and at-its outer ends pivoted at 22 to a segmental or angular plate 23 pivoted to the car end at 24. The plates 23 are preferably arranged in pairs one above the other spaced apart a distance corresponding sub; stantially to the width of the bow spring 20 as clearly shown in Fig. 2. It will be noted thatthe angle plates 23 arepivoted at 24 so as to swing upon said pivot from a position with the rear edge of the plate bearing against the car end as an abutment to a position with said rear edge inclined thereto.

This for the purpose of lending extreme flexibility in operation to the bow spring 20,

permitting, as it does, the ends of said spring to separate laterally of the car as the central POI'tlOIl'thGIBOf moves to the rear lon 'tudipplly of the car under the impact of ufling ows..

It will be observed that with the upper.

bulling mechanism' described, not only is the face plate permitted to move to the rear in a rig t' line, telescopin the diaphragm section, under ufiiig strains, but it is also permitted to freely rock on sharp curves about its vertical axis correspondin without any binding of the parts'and consequent wear and noise. The upper buflin mechanism is inexpensive from the stan point of installation and also of maintenance,

elficient, and admirably meets 'allrthe exigencies of use. 1

1s peculiarly posed in the connection at the ends. 2. In a diaphragm bufling mec amsm, the combination with the stationary andmovable members of the diaphragm, of a 110 with, the point of attachment of the spring 21 sprin attached at a median point to the mova le member and at its ends to the stationary member, and links interposed in the connection of the spring ends to the stationary member.

3. In a diaphragmbuifing mechanism, the combination with the stationary and movable members'of the diaphragm, of a bow spring attached in its medial ortion to one.

able members of the diaphragm, of a bow sprin attached at a median point to the move le member and at its ends to the stationary member, and links interposed in the connection of the spring ends to the stationary member, each of said links comprising a pair ofyspaced angular shaped plates pivoted at the angle to the member and at the extremity of one leg tothe spring end, the other leg lying normally against the sta tionary member.

5. In a diaphragm bufling mechanism, the combination with the stationary and movable members of the diaphragm, stems extending to the rear of the face plate and slidable withinthe car framing, and compression springs mounted on said stems and servin as a lower bufling mechanism, of an upper ufiing mechanism comprising a bow spring attached in its medial portion to the face plate and at its ends to a stationary support, and links interposed in the connection between the spring ends and the stationary support.

6. In a diaphragm bufiing mechanism, the combination with the stationary and movable members of the diaphragm, stems extending to the rear of the face plate and slidable within the car framing, and compression springs mounted on said stems and serving as a lower bufling mechanism, of an upper buflin mechanism comprising a bow spring attac ed in its medial portion to the face plate and at its ends to a stationary support, and links interposed in the connection between the spring ends and the stationary support, each of said links comprising a pan of spaced angular shaped plates pivoted at the angle to the stationary support and at-the extremity of one leg-to the sprin end, the other leg lying normally against t e stationary support.

In witness whereof I havehereunto signed m name in the presence. of two subscribing witnesses.

EDWARD E. WHITMORE. Witnesses: S. G. MEDEIL,

W. V. REYNOLDS: 

